US1700993A - Silencer for internal-combustion engines - Google Patents
Silencer for internal-combustion engines Download PDFInfo
- Publication number
- US1700993A US1700993A US189803A US18980327A US1700993A US 1700993 A US1700993 A US 1700993A US 189803 A US189803 A US 189803A US 18980327 A US18980327 A US 18980327A US 1700993 A US1700993 A US 1700993A
- Authority
- US
- United States
- Prior art keywords
- silencer
- combustion engines
- walls
- internal
- conduit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
- F01N1/084—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling the gases flowing through the silencer two or more times longitudinally in opposite directions, e.g. using parallel or concentric tubes
Definitions
- This invention relates to a silencer for internal combustion engines.
- Silencers as hitherto constructed have not been entirely satisfactory, as either their mullling eliiciency has been poor, or else in use they have entailed undue loss of engine power.
- the present invention concerns a silencer that has a high silencing eiiiciency, and which does not unduly influence the power of the engine.
- the invention consists broadly in certain combinations of parts whereby the exhaust gases are on plurality of occasions divided and caused to traverse a circuitous path, reunited, and ultimately passed to the atmosphere.
- Figure 1 is a plan of a silencer
- FIG. 2 is a rear sectional elevation on the line A-A of Fig. 1.
- 10 is the body of the silencer
- 11 is an inlet conduit
- 12 is a conduit conveniently terminating in a fish tail exit slit 13.
- a plurality oi curved concentric pairs of dividing walls or divisions such as 14, 15 and 16. These walls extend for the complete width oi? the body 10, but alternately have an open ing at one end or the other.
- the walls 14 are open at the left side, the walls 15 at the right, and the walls 16 at the leit.
- an exhaust conduit 17 Positioned in the space formed by the dividing walls 16 is an exhaust conduit 17 that has an opening 18. Such conduit extends into the conduit 12, where it has vents 19.
- a barier 20 is interposed between such vents and the exit slit 13.
- the silencer operates as follows Exhaust gases enter by conduit 11, are then divided by the dividing walls 14 so as either to travel in a circuitous clockwise or in a circuitous anti-clockwise direction. The gases ultimately re-unite and pass through the space between the other end ()1 the walls 14. The gases are then divided by the walls 15. Subsequently, the gases, after re-uniting, are divided by the walls 16. After passing around the outside of the exhaust conduit 17, they pass into the open end 18. After passing along such conduit, the gases pass out of the vents 19 and so reach the space between the conduits 17 and 12, from whence after meeting the baliie 20, they pass into the atmosphere through the fish-tail exit slit 13.
- the body of the silencer need not be egg-shaped in outline. In fact, when used for motorcycles, an orna mental exterior outline would be preferable.
- a body having inlet and outlet pa sages at opposite ends, a plurality of curved dividing walls spaced from said body ant from each other to form passageways, each wall having an opening and the several walls being so disposed that the opening in one wall is opposite a closed portion in an adjacent wall, and an exhaust conduit extending from the space within. the innermost wall to the outlet passage, a plurality oi vents formed in that part of the exhaust conduit extending into the outlet passage, and a baflie for said exhaust conduit.
Description
. Feb."5,1929. 1,700,993
F. X. BERNET ET AL SILENCER FOR INTERNAL COMBUSTION ENGINES Filed May 9, 1927 ii is a 11 65060000 1 W a l 12 Fig.2.
1mm FRANZ XAVIERBERNET,
Patented Feb. 5, 1929.
UNITED STATES PATENT OFFICE.
FRANZ XAVIER BERNET AND PAUL JOHN LUTHY, OF PERTH, WESTERN AUSTRALIA, AUSTRALIA.
SILENCER FOR INTERNAL-COMBUSTION ENGINES.
Application filed May 9, 1927. Serial No. 189,803.
This invention relates to a silencer for internal combustion engines.
Silencers as hitherto constructed have not been entirely satisfactory, as either their mullling eliiciency has been poor, or else in use they have entailed undue loss of engine power.
The present invention concerns a silencer that has a high silencing eiiiciency, and which does not unduly influence the power of the engine.
The invention consists broadly in certain combinations of parts whereby the exhaust gases are on plurality of occasions divided and caused to traverse a circuitous path, reunited, and ultimately passed to the atmosphere.
Reference is hereby made to the accomanying drawings, in which Figure 1 is a plan of a silencer, and
2 is a rear sectional elevation on the line A-A of Fig. 1.
In these drawings, 10 is the body of the silencer, 11 is an inlet conduit, and 12 is a conduit conveniently terminating in a fish tail exit slit 13.
inside the body of the silencer are a plurality oi curved concentric pairs of dividing walls or divisions such as 14, 15 and 16. These walls extend for the complete width oi? the body 10, but alternately have an open ing at one end or the other. Thus, as illustrated, the walls 14 are open at the left side, the walls 15 at the right, and the walls 16 at the leit. Positioned in the space formed by the dividing walls 16 is an exhaust conduit 17 that has an opening 18. Such conduit extends into the conduit 12, where it has vents 19. A baiile 20 is interposed between such vents and the exit slit 13.
The silencer operates as follows Exhaust gases enter by conduit 11, are then divided by the dividing walls 14 so as either to travel in a circuitous clockwise or in a circuitous anti-clockwise direction. The gases ultimately re-unite and pass through the space between the other end ()1 the walls 14. The gases are then divided by the walls 15. Subsequently, the gases, after re-uniting, are divided by the walls 16. After passing around the outside of the exhaust conduit 17, they pass into the open end 18. After passing along such conduit, the gases pass out of the vents 19 and so reach the space between the conduits 17 and 12, from whence after meeting the baliie 20, they pass into the atmosphere through the fish-tail exit slit 13.
It is to be understood that the body of the silencer need not be egg-shaped in outline. In fact, when used for motorcycles, an orna mental exterior outline would be preferable.
In a silencer for internal combustion engines, a body having inlet and outlet pa sages at opposite ends, a plurality of curved dividing walls spaced from said body ant from each other to form passageways, each wall having an opening and the several walls being so disposed that the opening in one wall is opposite a closed portion in an adjacent wall, and an exhaust conduit extending from the space within. the innermost wall to the outlet passage, a plurality oi vents formed in that part of the exhaust conduit extending into the outlet passage, and a baflie for said exhaust conduit.
Dated this twenty-first day of March, 1927.
FRANZ XAVIER BERNET. PA'UL JOHN LUTHY.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US189803A US1700993A (en) | 1927-05-09 | 1927-05-09 | Silencer for internal-combustion engines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US189803A US1700993A (en) | 1927-05-09 | 1927-05-09 | Silencer for internal-combustion engines |
Publications (1)
Publication Number | Publication Date |
---|---|
US1700993A true US1700993A (en) | 1929-02-05 |
Family
ID=22698832
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US189803A Expired - Lifetime US1700993A (en) | 1927-05-09 | 1927-05-09 | Silencer for internal-combustion engines |
Country Status (1)
Country | Link |
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US (1) | US1700993A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4108274A (en) * | 1976-07-06 | 1978-08-22 | Jet Aeration Company | Acoustical apparatus |
US4292978A (en) * | 1979-12-26 | 1981-10-06 | Guth Richard U | Breath test mouthpiece |
US5076393A (en) * | 1990-11-13 | 1991-12-31 | Howerton Kenneth R | Engine exhaust muffler |
US5220137A (en) * | 1990-11-13 | 1993-06-15 | Howerton Kenneth R | Engine exhaust muffler |
US6571910B2 (en) | 2000-12-20 | 2003-06-03 | Quiet Storm, Llc | Method and apparatus for improved noise attenuation in a dissipative internal combustion engine exhaust muffler |
US20050279572A1 (en) * | 2004-06-17 | 2005-12-22 | Lars Birgersson | Arrangement for internal combustion engine |
-
1927
- 1927-05-09 US US189803A patent/US1700993A/en not_active Expired - Lifetime
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4108274A (en) * | 1976-07-06 | 1978-08-22 | Jet Aeration Company | Acoustical apparatus |
US4292978A (en) * | 1979-12-26 | 1981-10-06 | Guth Richard U | Breath test mouthpiece |
US5076393A (en) * | 1990-11-13 | 1991-12-31 | Howerton Kenneth R | Engine exhaust muffler |
US5220137A (en) * | 1990-11-13 | 1993-06-15 | Howerton Kenneth R | Engine exhaust muffler |
US6571910B2 (en) | 2000-12-20 | 2003-06-03 | Quiet Storm, Llc | Method and apparatus for improved noise attenuation in a dissipative internal combustion engine exhaust muffler |
US20050279572A1 (en) * | 2004-06-17 | 2005-12-22 | Lars Birgersson | Arrangement for internal combustion engine |
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